. . . the argument from absence of transitional types boils down to the striking fact that such types are always lacking unless they have been found.
Like I said, a sketch is one joke. They shouldn't really be more than a minute, two minutes. There are some shows where the sketch goes on for five minutes. It's like, "I get it! I'm already bored. I did like the joke, but I don't anymore, because you went on too long. "